The criticism leveled (which I do not actually any insight to the truth of) is that essentially people have to follow his "whims" and are micromanaged, which does not bring out the best of employees and can be very stifling.
But that said, I don't know the truth of that criticism.
Another interesting tidbit that plays into this...the syntax coloring is programmatically derived from the documentation (yet another consequence of the documentation being the specification). This wasn't mentioned in the meeting because most or all of the participants already knew this, but it's an important part of the subtext of the discussion.
Speaking as an insider who wasn't present at that particular meeting, but has been present in some other live-streamed meetings.
> Usually we (which quite often actually means me) will write documentation for a function before the function is implemented.